#include "MipsRegisterInfo.h"
#include "Mips.h"
#include "MipsAnalyzeImmediate.h"
+#include "MipsInstrInfo.h"
#include "MipsSubtarget.h"
#include "MipsMachineFunction.h"
#include "llvm/Constants.h"
+#include "llvm/DebugInfo.h"
#include "llvm/Type.h"
#include "llvm/Function.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/DebugInfo.h"
#define GET_REGINFO_TARGET_DESC
#include "MipsGenRegisterInfo.inc"
/// Mips Callee Saved Registers
const uint16_t* MipsRegisterInfo::
-getCalleeSavedRegs(const MachineFunction *MF) const
-{
+getCalleeSavedRegs(const MachineFunction *MF) const {
if (Subtarget.isSingleFloat())
return CSR_SingleFloatOnly_SaveList;
else if (!Subtarget.hasMips64())
return CSR_O32_SaveList;
else if (Subtarget.isABI_N32())
return CSR_N32_SaveList;
-
+
assert(Subtarget.isABI_N64());
- return CSR_N64_SaveList;
+ return CSR_N64_SaveList;
}
const uint32_t*
-MipsRegisterInfo::getCallPreservedMask(CallingConv::ID) const
-{
+MipsRegisterInfo::getCallPreservedMask(CallingConv::ID) const {
if (Subtarget.isSingleFloat())
return CSR_SingleFloatOnly_RegMask;
else if (!Subtarget.hasMips64())
return CSR_N32_RegMask;
assert(Subtarget.isABI_N64());
- return CSR_N64_RegMask;
+ return CSR_N64_RegMask;
}
BitVector MipsRegisterInfo::
getReservedRegs(const MachineFunction &MF) const {
static const uint16_t ReservedCPURegs[] = {
- Mips::ZERO, Mips::AT, Mips::K0, Mips::K1,
- Mips::SP, Mips::FP, Mips::RA
+ Mips::ZERO, Mips::AT, Mips::K0, Mips::K1, Mips::SP
};
static const uint16_t ReservedCPU64Regs[] = {
- Mips::ZERO_64, Mips::AT_64, Mips::K0_64, Mips::K1_64,
- Mips::SP_64, Mips::FP_64, Mips::RA_64
+ Mips::ZERO_64, Mips::AT_64, Mips::K0_64, Mips::K1_64, Mips::SP_64
};
BitVector Reserved(getNumRegs());
- typedef TargetRegisterClass::iterator RegIter;
+ typedef TargetRegisterClass::const_iterator RegIter;
for (unsigned I = 0; I < array_lengthof(ReservedCPURegs); ++I)
Reserved.set(ReservedCPURegs[I]);
Reserved.set(ReservedCPU64Regs[I]);
// Reserve all registers in AFGR64.
- for (RegIter Reg = Mips::AFGR64RegisterClass->begin();
- Reg != Mips::AFGR64RegisterClass->end(); ++Reg)
+ for (RegIter Reg = Mips::AFGR64RegClass.begin(),
+ EReg = Mips::AFGR64RegClass.end(); Reg != EReg; ++Reg)
Reserved.set(*Reg);
- }
- else {
+ } else {
// Reserve all registers in CPU64Regs & FGR64.
- for (RegIter Reg = Mips::CPU64RegsRegisterClass->begin();
- Reg != Mips::CPU64RegsRegisterClass->end(); ++Reg)
+ for (RegIter Reg = Mips::CPU64RegsRegClass.begin(),
+ EReg = Mips::CPU64RegsRegClass.end(); Reg != EReg; ++Reg)
Reserved.set(*Reg);
- for (RegIter Reg = Mips::FGR64RegisterClass->begin();
- Reg != Mips::FGR64RegisterClass->end(); ++Reg)
+ for (RegIter Reg = Mips::FGR64RegClass.begin(),
+ EReg = Mips::FGR64RegClass.end(); Reg != EReg; ++Reg)
Reserved.set(*Reg);
}
- // If GP is dedicated as a global base register, reserve it.
- if (MF.getInfo<MipsFunctionInfo>()->globalBaseRegFixed()) {
- Reserved.set(Mips::GP);
- Reserved.set(Mips::GP_64);
+ // Reserve FP if this function should have a dedicated frame pointer register.
+ if (MF.getTarget().getFrameLowering()->hasFP(MF)) {
+ Reserved.set(Mips::FP);
+ Reserved.set(Mips::FP_64);
}
// Reserve hardware registers.
Reserved.set(Mips::HWR29);
Reserved.set(Mips::HWR29_64);
+ // Reserve RA if in mips16 mode.
+ if (Subtarget.inMips16Mode()) {
+ Reserved.set(Mips::RA);
+ Reserved.set(Mips::RA_64);
+ }
+
return Reserved;
}
+bool
+MipsRegisterInfo::requiresRegisterScavenging(const MachineFunction &MF) const {
+ return true;
+}
+
+bool
+MipsRegisterInfo::trackLivenessAfterRegAlloc(const MachineFunction &MF) const {
+ return true;
+}
+
// This function eliminate ADJCALLSTACKDOWN,
// ADJCALLSTACKUP pseudo instructions
void MipsRegisterInfo::
// incoming argument, callee-saved register location or local variable.
int64_t Offset;
- if (MipsFI->isOutArgFI(FrameIndex) || MipsFI->isGPFI(FrameIndex) ||
- MipsFI->isDynAllocFI(FrameIndex))
+ if (MipsFI->isOutArgFI(FrameIndex) || MipsFI->isDynAllocFI(FrameIndex) ||
+ MipsFI->isGlobalRegFI(FrameIndex))
Offset = spOffset;
else
Offset = spOffset + (int64_t)stackSize;
if (!MI.isDebugValue() && !isInt<16>(Offset)) {
MachineBasicBlock &MBB = *MI.getParent();
DebugLoc DL = II->getDebugLoc();
- MipsAnalyzeImmediate AnalyzeImm;
- unsigned Size = Subtarget.isABI_N64() ? 64 : 32;
- unsigned LUi = Subtarget.isABI_N64() ? Mips::LUi64 : Mips::LUi;
unsigned ADDu = Subtarget.isABI_N64() ? Mips::DADDu : Mips::ADDu;
- unsigned ZEROReg = Subtarget.isABI_N64() ? Mips::ZERO_64 : Mips::ZERO;
unsigned ATReg = Subtarget.isABI_N64() ? Mips::AT_64 : Mips::AT;
- const MipsAnalyzeImmediate::InstSeq &Seq =
- AnalyzeImm.Analyze(Offset, Size, true /* LastInstrIsADDiu */);
- MipsAnalyzeImmediate::InstSeq::const_iterator Inst = Seq.begin();
-
- // FIXME: change this when mips goes MC".
- BuildMI(MBB, II, DL, TII.get(Mips::NOAT));
-
- // The first instruction can be a LUi, which is different from other
- // instructions (ADDiu, ORI and SLL) in that it does not have a register
- // operand.
- if (Inst->Opc == LUi)
- BuildMI(MBB, II, DL, TII.get(LUi), ATReg)
- .addImm(SignExtend64<16>(Inst->ImmOpnd));
- else
- BuildMI(MBB, II, DL, TII.get(Inst->Opc), ATReg).addReg(ZEROReg)
- .addImm(SignExtend64<16>(Inst->ImmOpnd));
-
- // Build the remaining instructions in Seq except for the last one.
- for (++Inst; Inst != Seq.end() - 1; ++Inst)
- BuildMI(MBB, II, DL, TII.get(Inst->Opc), ATReg).addReg(ATReg)
- .addImm(SignExtend64<16>(Inst->ImmOpnd));
+ MipsAnalyzeImmediate::Inst LastInst(0, 0);
+ MipsFI->setEmitNOAT();
+ Mips::loadImmediate(Offset, Subtarget.isABI_N64(), TII, MBB, II, DL, true,
+ &LastInst);
BuildMI(MBB, II, DL, TII.get(ADDu), ATReg).addReg(FrameReg).addReg(ATReg);
FrameReg = ATReg;
- Offset = SignExtend64<16>(Inst->ImmOpnd);
- BuildMI(MBB, ++II, MI.getDebugLoc(), TII.get(Mips::ATMACRO));
+ Offset = SignExtend64<16>(LastInst.ImmOpnd);
}
MI.getOperand(i).ChangeToRegister(FrameReg, false);
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